From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 26 Jun 2020 19:30:18 +0000 (+0100)
Subject: add pi.busy_o connection, increase to 64 bit
X-Git-Tag: div_pipeline~254
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7b25312da3de910628f855ff92a0ede642d8d9b5;p=soc.git

add pi.busy_o connection, increase to 64 bit
---

diff --git a/src/soc/experiment/pi2ls.py b/src/soc/experiment/pi2ls.py
index f2c485c9..11cd1ab5 100644
--- a/src/soc/experiment/pi2ls.py
+++ b/src/soc/experiment/pi2ls.py
@@ -31,8 +31,9 @@ from nmigen import Elaboratable, Module, Signal
 
 class Pi2LSUI(Elaboratable):
 
-    def __init__(self, name, pi=None, lsui=None, regwid=64, addrwid=48):
-        self.addrbits = 4
+    def __init__(self, name, pi=None, lsui=None,
+                             regwid=64, mask_wid=8, addrwid=48):
+        self.addrbits = mask_wid
         if pi is None:
             pi = PortInterface(name="%s_pi", regwid=regwid, addrwid=addrwid)
         self.pi = pi
@@ -52,6 +53,7 @@ class Pi2LSUI(Elaboratable):
 
         m.d.comb += lsui.x_ld_i.eq(pi.is_ld_i)
         m.d.comb += lsui.x_st_i.eq(pi.is_st_i)
+        m.d.comb += pi.busy_o.eq(lsui.x_busy_o)
 
         with m.If(pi.addr.ok):
             # expand the LSBs of address plus LD/ST len into 16-bit mask
diff --git a/src/soc/experiment/test/test_pi2ls.py b/src/soc/experiment/test/test_pi2ls.py
index 674d417c..705d691c 100644
--- a/src/soc/experiment/test/test_pi2ls.py
+++ b/src/soc/experiment/test/test_pi2ls.py
@@ -124,10 +124,11 @@ class TestPIMem(unittest.TestCase):
 
     def test_pi2ls(self):
         m = Module()
-        regwid = 32
-        addrwid = 32
+        regwid = 64
+        addrwid = 48
         m.submodules.dut = dut = Pi2LSUI("mem", regwid=regwid, addrwid=addrwid)
         m.submodules.lsmem = lsmem = TestMemLoadStoreUnit(addr_wid=addrwid,
+                                                          mask_wid=8,
                                                           data_wid=regwid)
 
         # Connect inputs